Condensation and waste heat recovery integrated device

Abstract

The utility model relates to the field of waste liquid treatment, concretely to a condensation and waste heat recovery integrated device, and the outside of waste liquid storage tank is fixed rotary joint through support frame, the lower end of third connecting pipe extends to the inside of storage tank and is equipped with spiral stirring vane, and through servo motor drive second gear rotation, drive meshed first gear and third connecting pipe rotation, finally realize the sustained stirring of stirring vane to waste liquid, this design can effectively prevent the solid impurity in waste liquid and deposit at the bottom of storage tank, avoid the blockage of fourth connecting pipe or damage water pump, ensure waste liquid concentration even simultaneously, improve the stability of distillation reaction in distillation tank, when the high temperature steam generated by distillation tank condenses in condenser pipe, the heat released can directly transfer to the waste liquid in preheating pipe that is about to enter distillation tank, realize the efficient recycling of waste heat, reduce the additional energy consumption needed for the preheating of waste liquid to be treated, reduce the energy consumption of overall device, meet the requirement of energy saving and environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of waste liquid treatment technology, specifically to an integrated device for condensation and waste heat recovery. Background Technology

[0002] NMP, a polar aprotic solvent, is widely used in the electronics, chemical, and pharmaceutical industries. During these production processes, large quantities of NMP-containing waste liquid are generated. Direct discharge of this waste liquid would cause environmental pollution and waste the recoverable NMP resources. Currently, the common method for treating NMP waste liquid is distillation, which involves heating to vaporize the NMP and then condensing it to recover the NMP. However, in existing treatment devices, the condensation system and the waste heat recovery system are usually independent of each other. On the one hand, the high-temperature NMP vapor generated during the distillation process needs to be cooled by a separate condensation device, which has low condensation efficiency, and the heat released during the condensation process is directly lost, resulting in energy waste. On the other hand, the NMP waste liquid to be treated needs to be preheated before entering the distillation equipment, which requires additional energy to heat it. The overall device has high energy consumption and low resource utilization, which does not meet the requirements of energy conservation and environmental protection. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing an integrated condensation and waste heat recovery device.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An integrated condensation and waste heat recovery device includes a distillation tank, a waste liquid preheating tank, and a waste liquid storage tank. A first connecting pipe is fixedly connected to the top of the distillation tank. A shell is fixedly connected inside the waste liquid preheating tank, and a condenser pipe is fixedly connected inside the shell. One end of the first connecting pipe passes through one side of the shell and is fixedly connected to the condenser pipe. A preheating pipe is fixedly connected to the outside of the shell. A second connecting pipe is fixedly connected to the top of the waste liquid preheating tank. A support frame is fixedly connected to the outside of the waste liquid storage tank. A rotary joint is fixedly connected to the top of the support frame. One end of the second connecting pipe is rotatably connected to the rotary joint. A third connecting pipe is provided at the bottom of the rotary joint. The lower end of the third connecting pipe passes through the top of the waste liquid storage tank and extends into the interior of the waste liquid storage tank. A stirring blade is provided on the outside of the third connecting pipe.

[0005] The beneficial effects of this utility model are: it integrates the condensation function and the waste heat recovery function into one unit, so that when the high-temperature steam generated by the distillation tank is condensed in the condenser tube, the heat released can be directly transferred to the waste liquid to be entered into the distillation tank in the preheating tube, realizing the efficient recovery and utilization of waste heat, reducing the additional energy consumption required for preheating the waste liquid to be treated, reducing the overall energy consumption of the device, and meeting the requirements of energy conservation and environmental protection.

[0006] Furthermore, a servo motor is fixedly connected to the top of the support frame, and a second gear is fixedly connected to the output end of the servo motor. A first gear is fixedly connected to the outside of the third connecting tube. One side of the first gear meshes with the second gear. When the servo motor is turned on, it drives the second gear to rotate. The rotation of the second gear drives the first gear on one side to rotate. The rotation of the first gear drives the third connecting tube to rotate. Protective boxes are provided on the outside of the first gear and the second gear to prevent dust and impurities from entering the meshing area of ​​the first gear and the second gear, thereby reducing the wear of the first gear and the second gear.

[0007] Furthermore, a water pump is fixedly connected to one side of the waste liquid preheating tank, and one end of the preheating pipe passes through one side of the waste liquid preheating tank and is fixedly connected to one end of the water pump. After the water pump is turned on, the waste liquid in the waste liquid storage tank is extracted through the preheating pipe.

[0008] Furthermore, a fourth connecting pipe is fixedly connected to one end of the water pump. One end of the fourth connecting pipe extends through one side of the distillation tank into the interior of the distillation tank. The water pump pumps the preheated waste liquid in the preheating pipe into the distillation tank through the fourth connecting pipe.

[0009] Furthermore, the waste liquid preheating tank is provided with an insulation layer on the outside, which is made of rock wool insulation material to keep the inside of the waste liquid preheating tank warm.

[0010] Furthermore, the distillation tank is equipped with a heating device, which is an electric heating tube. The electric heating tubes are evenly distributed at the bottom of the distillation tank to heat the inside of the distillation tank.

[0011] Furthermore, the interior of the distillation tank is equipped with a thermometer and a level gauge, and a control panel is located on one side of the distillation tank. The level gauge is used to monitor the level of the waste liquid inside the distillation tank, and the thermometer is used to monitor the temperature inside the distillation tank. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the shell structure of this utility model; Figure 4 This utility model Figure 2 A magnified structural diagram of the inner part at point A.

[0013] The attached diagram lists the components represented by each number as follows: 1. Distillation tank; 2. Waste liquid preheating tank; 3. Waste liquid storage tank; 4. First connecting pipe; 5. Second connecting pipe; 6. Thermometer; 7. Level gauge; 8. Shell; 9. Condenser; 10. Preheating pipe; 11. Support frame; 12. Rotary joint; 13. Servo motor; 14. Third connecting pipe; 15. First gear; 16. Second gear; 17. Stirring blade; 18. Water pump; 19. Fourth connecting pipe; 20. Control panel. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0015] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0016] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0017] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0018] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0019] Example 1 Figure 1 This utility model provides an integrated condensation and waste heat recovery device. Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the shell structure of this utility model; Figure 4 This utility model Figure 2 A magnified structural diagram of internal part A. (See diagram below.) Figure 1 , Figure 2 and Figure 3 As shown, the device includes a distillation tank 1, a waste liquid preheating tank 2, and a waste liquid storage tank 3. A first connecting pipe 4 is fixedly connected to the top of the distillation tank 1. A shell 8 is fixedly connected inside the waste liquid preheating tank 2, and a condenser pipe 9 is fixedly connected inside the shell 8. One end of the first connecting pipe 4 passes through one side of the shell 8 and is fixedly connected to the condenser pipe 9. A preheating pipe 10 is fixedly connected to the outside of the shell 8. A second connecting pipe 5 is fixedly connected to the top of the waste liquid preheating tank 2. A support frame 1 is fixedly connected to the outside of the waste liquid storage tank 3. 1. A rotary joint 12 is fixedly connected to the top of the support frame 11. One end of the second connecting pipe 5 is rotatably connected to the rotary joint 12. A third connecting pipe 14 is provided at the bottom of the rotary joint 12. The lower end of the third connecting pipe 14 extends through the top of the waste liquid storage tank 3 and into the interior of the waste liquid storage tank 3. A stirring blade 17 is provided on the outer side of the third connecting pipe 14. A water pump 18 is fixedly connected to one side of the waste liquid preheating tank 2. One end of the preheating pipe 10 passes through one side of the waste liquid preheating tank 2 and is fixedly connected to one end of the water pump 18.

[0020] Start water pump 18, and water pump 18 draws waste liquid from waste liquid storage tank 3 into preheating pipe 10 of waste liquid preheating tank 2 through fourth connecting pipe 19. Simultaneously, the heating device inside the distillation tank 1 is activated to heat the waste liquid inside the tank. The generated high-temperature steam enters the condenser tube 9 inside the waste liquid preheating tank 2 through the first connecting pipe 4. The steam condenses into liquid in the condenser tube 9, and the residual heat released during the process is transferred to the shell 8. The shell 8 conducts the heat to the preheating tube 10 on the outside to preheat the waste liquid to be treated in the tube. The rock wool insulation layer on the outside of the waste liquid preheating tank 2 can reduce heat loss and ensure preheating efficiency. The waste liquid heated by the preheating tube 10 is transported to the distillation tank 1 through the fourth connecting pipe 19 under the action of the water pump 18. The steam continuously generated in the distillation tank 1 enters the condenser tube 9 through the first connecting pipe 4 to complete condensation. The condensed solvent can be collected through the outlet of the condenser tube 9. The waste liquid preheated in the waste liquid preheating tank 2 is continuously replenished to the distillation tank 1, forming a closed loop process of "storage tank - preheating - distillation - condensation" until the waste liquid treatment is completed.

[0021] Example 2 Based on Embodiment 1, the present invention can be further improved in the following ways, such as... Figure 4 As shown, when the servo motor 13 is started, its output drives the second gear 16 to rotate. Since the second gear 16 meshes with the first gear 15 on the outside of the third connecting pipe 14, the first gear 15 rotates along with it, thereby driving the third connecting pipe 14 to rotate within the rotary joint 12. At this time, the spiral stirring blades 17 on the outside of the third connecting pipe 14 rotate synchronously, stirring the waste liquid in the waste liquid storage tank 3 to prevent solid impurities from settling. The heating device in the distillation tank 1 continuously heats according to the parameters set on the control panel 20. The thermometer 6 monitors the temperature inside the tank in real time, and the level gauge 7 monitors the waste liquid level in real time and transmits the data to the control panel 20. The operator can adjust the heating power through the panel to ensure the stable operation of the distillation process.

[0022] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. An integrated condensation and waste heat recovery device, comprising a distillation tank (1), a waste liquid preheating tank (2), and a waste liquid storage tank (3), characterized in that: The top of the distillation tank (1) is fixedly connected to a first connecting pipe (4), the inside of the waste liquid preheating tank (2) is fixedly connected to a shell (8), the inside of the shell (8) is fixedly connected to a condenser (9), one end of the first connecting pipe (4) passes through one side of the shell (8) and is fixedly connected to the condenser (9), the outside of the shell (8) is fixedly connected to a preheating pipe (10), the top of the waste liquid preheating tank (2) is fixedly connected to a second connecting pipe (5), the outside of the waste liquid storage tank (3) is fixedly connected to a support frame (11), the top of the support frame (11) is fixedly connected to a rotary joint (12), one end of the second connecting pipe (5) is rotatably connected to the rotary joint (12), the bottom of the rotary joint (12) is provided with a third connecting pipe (14), the lower end of the third connecting pipe (14) passes through the top of the waste liquid storage tank (3) and extends to the inside of the waste liquid storage tank (3), the outside of the third connecting pipe (14) is provided with a stirring blade (17).

2. The integrated condensation and waste heat recovery device according to claim 1, characterized in that: A servo motor (13) is fixedly connected to the top of the support frame (11), and a second gear (16) is fixedly connected to the output end of the servo motor (13). A first gear (15) is fixedly connected to the outside of the third connecting pipe (14), and one side of the first gear (15) meshes with the second gear (16).

3. The integrated condensation and waste heat recovery device according to claim 1, characterized in that: A water pump (18) is fixedly connected to one side of the waste liquid preheating tank (2), and one end of the preheating pipe (10) passes through one side of the waste liquid preheating tank (2) and is fixedly connected to one end of the water pump (18).

4. The integrated condensation and waste heat recovery device according to claim 3, characterized in that: One end of the water pump (18) is fixedly connected to a fourth connecting pipe (19), and one end of the fourth connecting pipe (19) extends through one side of the distillation tank (1) into the interior of the distillation tank (1).

5. The integrated condensation and waste heat recovery device according to claim 1, characterized in that: The waste liquid preheating tank (2) is provided with an insulation layer on the outside.

6. The integrated condensation and waste heat recovery device according to claim 1, characterized in that: The distillation tank (1) is equipped with a heating device, which is an electric heating tube.

7. The integrated condensation and waste heat recovery device according to claim 1, characterized in that: The interior of the distillation tank (1) is equipped with a thermometer (6) and a level gauge (7), and a control panel (20) is provided on one side of the distillation tank (1).

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